The present investigation arises from the interest of generating unpublished and original information regarding the correct selection of materials for social interest housing. The characteristics of social interest housing, specifically in San Pedro Valley Tijuana, BC, to be built in a limited area and insufficient for the proper development of user activities, since being of small dimensions generates a problem of adaptation to the issues environmental factors that can be adjusted to the changes in temperature that are generated inside the house, during the different times of the year, creating a thermal discomfort. The main objective of this work is to evaluate the thermal effect of the addition of different insulating materials, with low absorptivity and high diffusivity, determining the most suitable material and the thickness that allows to achieve the comfort ranges (21 ° C-24 ° C) established. The case study was a house in the San Pedro Valley subdivision, without occupation, the development is a complex of multifamily housing in a vertical condominium where a physical dwelling of 63.48 m² was managed, housing spaces were measured, the walls of these spaces are of a constructive system of Outinord. The construction system was evaluated to verify that the proposed coatings had load capacity. The thermal capacity of the system was evaluated through on-site monitoring and simulation. The monitoring was carried out with the measurement of a house in accordance with the ASHRAE 55-2010 standard for thermal comfort assessment. The temperatures of dry bulb, relative humidity, dew point and ambient temperature were taken into account. The simulation was made by means of a comparison between the uncoated and coated construction system, where the thermal capacity of the construction system was observed. In conclusion, a housing facing south (90 °) and with a coating on the envelope thermally improves the situation of an atypical orientation (45 ° of the house), and meets the objective of improving the comfort temperature conditions for the user. Regarding the construction system (Outinord), it was shown that the system alone does not provide the comfort conditions (environmental interior) required for the climate zone of Tijuana, BC, so this requires the implementation of a coating that increases its resistance thermal or that reduces its conductivity to provide thermal comfort.